These are just my own notes I made during a playing around setup while exploring the Reycom device - re-use the same at your own discretion and may be as a reference (no guarantees at all)
Especially the Linux related sections represent a very minimalistic setup just to make it work
Requirements
Reycom rec100
USB pen drive (4GB or more)
Kodibuntu ISO
Mac or Linux machine (needed to create a bootable USB stick)
Attach the USB keyboard and bootable USB pen drive to the Reycom Box
Connect the Reycom box to the display or TV using the provided HDMI cable
Installation
Boot the Reycom box and hit the F11 key multiple times as soon as the Reycom brand logo appears
Select the USB stick and hit Enter
Follow the Ubuntu installer’s instructions, perform a regular installation selecting the smaller of the two builtin drives as the target volume (should be the SSD disk)
The installation should be completed as soon as the installer prompts for a reboot (you may remove the USB pen drive and reboot)
If the installation was successful, the Kodi UI should appear after reboot
Configuration
Kodi
Screen Calibration
Navigate to Settings > System > Video Output
Select Screen Calibration
Use the mouse and point to the upper left corner bringing up a small marking where the same can be selected and dragged until the two lines become in line with the display border (see the next screenshot)
Hit Enter
Repeat the same step for the lower right corner and hit Enter
Point the mouse cursor to the lower area of the display, more or less in the middle. Then as soon as a small line indicating the sub-title position appears drag the same (see next screenshot) and hit Enter
To complete the calibration, adjust the rectangle the same way as before until the pixel ratio equals the one of the screenshot below (hit Enter to complete)
Once the calibration is done, leave the settings area
Ubuntu
Terminal Login
Press ctrl + alt + F1 in order to switch to the terminal
Login and start hacking the system
Terminal Login
Logout (ctrl + d)
Press ctrl + alt + F7 in order to switch back to the Kodi UI
Configuring a static IP can be helpful as soon as you plan to administrate the underlining Linux distro over SSH or less technical if Kodi should be controlled via the official Remote App.
The default Bios password as given by the vendor is: cE6bS8
Even if you try to change the Bios password it will be reset as soon as the Reycom box is being unplugged
OpenELEC
In case you want to install the OpenELEC operation system as an alternative, be advised that the same might not boot after being installed due to a missing Graphics driver